Traveling brush



'(No Model.) 2 Sheets-Sheet 1.

H. SEGK. TRAVELING BRUSH. No. 466,189. Patented 1300.29, 1891.

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III/IIIIIIIIIIIIIIIII I I l (No Model.) 2 Sheets-Sheet 2.

H. SEGK.

TRAVELING BRUSH.

No. 466,189. Patented Dec. 29, 1891.

w: NORRIS PLTERS cu, murmumm, WASNINGYON, n. c:

UNITED STATES PATENT OFFICE.

HEINRICH SEGK, OF DRESDEN, GERMANY.

TRAVEL|NG' BRUSH.

. SPECIFICATION forming part of Letters Patent No. 466,189, datedDecember 29, 1891,

Application filed August 20, 1891. Serial No. 403,230, (No model.)

To all whom it may concern.-

Be it known that I, HEINRICH SEoK, of Dresden, in the Kingdom of Saxonyand German Empire, have invented a certain new and useful Improvement inTraveling Brushes for Use in Sitting Apparatus or Sifters, of which thefollowing is a specification, reference being had to the accompanyingdrawings.

This invention relates more particularly to such sifting apparatuseshaving flat sieves, the carrying-frames of which, by any of thewell-known means, are given a succession of horizontal or approximatelyhorizontal movements in a circular or curved direction, or which arerocked in a rectilinear or nearly rectilinear direction; and the objectof my invention is to provide novel means for keeping the sieves orsifting-surfaces of such sifting apparatuses clean by removing therefrom such particles of the flour, middlings, or other material to besifted, or any other obstructions as may have settled between the meshesof the sifting-surfaces. To accomplish this object my invention involvesthe features of construction and the combination or arrangement .ofdevices hereinafter described and claimed, reference being made to theaccompanying drawings, in which- Figure 1 is a vertical sectional viewof the improved sifting apparatus, taken on the line '0 c, Fig. 2. 2 isa horizontal sectional View taken on the line 10 w, Fig. 1. Fig. 2 is adetail verticalsectional view taken on the line a: r, Fig. 1. Fig. 3 isa vertical sectional view showing a modification of the invention, theplane of section being on the line y y, Fig. 4. Fig. 4 is a plan View ofthe same, omitting the sieve-cloth and the upper half of the sieve-frameexhibited in Fig. 3. Fig. 5 is a detail sectional view on the line 2 a,Fig. 4. Fig. 6 is a detail longitudinal sectional view of a modifiedconstruction; and Fig. 7 is a sectional view taken on the line y y, Fig.6.

Reference being had to Figs. 1, 2, and 2 of the drawings and to the modeof arrangement thereby illustrated, the brushes 1) are fastened to thecarrier-frames a, arranged within the sieve-frame A, the said frames be=ing attached to an endless band 1", carried over rollers h. The endlessband r is provided with a ratchet composed of pegs or teeth 1', engagedby a pawl k, arranged on a standard or rib within the apparatus, thesaid pawl riding the teeth or pegs on the band as the same is moved inone direction, but engaging the said teeth or pegs against a movement ofthe band in the opposite direction. lVhen the sieve-frame is given acircular or curved horizontal or approximately horizontal or astraightforward rocking movement by any of the well-known means not hereshown,thebrushes,withtheircarrying-frames, will be swung with thetendency of a reciprocating movement over the sifting-surface, the saidmovement being limited in one (llrection by the pawl is engaging theteeth i on the endless band '1', while, the said band being free to movein the opposite direction, the brushes will in following the endlessband be gradually or stepwise carried around on the sifting-surface. Theflour or other material to be sifted having been introduced into theapparatus in the usual manner will be carried along over thesifting-surface by the motion of the sieve, and the traveling brushes,scraping against the said surface, will thereby clean eifectually theseveral meshes thereof, pushing through the same any of the materialwhich may have settled therein, thus keeping the meshes of the sievecontinually open, and thereby securing a proper action of the apparatus.At the same time, in the arrangement as shown in Figs. 1, 2, and 2 ofthe drawings the said brushes, while traveling over the surface of thesieve, will assist in conveying the material deposited on said surfaceacross the latter by imparting a positive movement to the said material,as will be readily-understood.

In the modified form of arrangement illustrated in Figs. 3, 4,3111d 5 ofthe drawings the brushes b, instead of being arranged above thesifting-surface, are shown as being arranged below the same, so as toenter the meshes from underneath, and thus to clean the same by pressingout the obstructions in an upward direction. The brushes 1) are hereshown as being attached by means of a saddle to carrying-blocks 0,connected with each other by strings or chains and moving on an endlessratchet-bar d, arranged within the sifting apparatus below the sifting=surface, the teeth of the said bar being engaged by pawls e,preferably made of leather or other flexible material and projectinglaterally from the carrying-blocks c of the brushes. Vhen thesieve-frame is given the usual curved horizontal or rectilinear rockingmovement, the said pawls 6 will ride the teeth of the ratchet in onedirection, the brushes being thus carried around within the apparatuswith their carryingbloeks c in the same manner as hereinbefore describedwith reference to the brushes arranged above the siftingsurface.

Instead of a' ratchet-bar and pawl, I may also, in the modifiedarrangement, as shown in Figs. 6 and 7 of the drawings, provide a smoothendless guide bar or rib d, engaged by the friction of a camf of thebrushes 1) in one direction of the movement of the latter, while in theother direction of movement the said cam will slide freely on the saidguidebar.

I wish itto be understood that Ido not conline myself to the specialconstructions and arrangements of parts as shown in the accompanyingdrawings, but that I consider as falling within the scope of my presentinvention all sifting apparatuses provided with rotary or rocking sieveshaving combined therewith brushes moved along the surface of the saidsieves in a predetermined direction by the motion of the latter andprevented from retrograde movement by special devices adapted for thelatter purpose.

I Iaving thus fully described my invention,

What I desire to claim and secure by Letters Patent is.

1, In a sifting apparatus, the combination, with a movable sieve, of oneor more traveling brushes receiving the required motion from the motionof the said sieve, and a pawl independent of the brushes for preventinga movement of said brushes in a direction opposite to that in which theyare traveling, substantially as and forthe purposes specified.

2. In a sifting apparatus, the combination, with a movable sieve and oneor more traveling brushes carried on an endless band, of a pawl engagingwith pegs or teeth on the said endless band and preventing a movement ofthe said band and its brush or brushes in one direction, but allowingthe same to move freely in the'opposite direction, substantially as andfor the purpose set forth.

3. In a sifting apparatus, the combination, with a movable sieve-frameand a traveling brush moved by the momentum of the sievefra-me, of apawl-and-ratchet mechanism for preventing movement of the brush in adirection opposite to that in which it is caused to travel by themomentum of the sieve-frame, substantially as described.

In testimony whereof I have signed my name'to this specification in thepresence of two subscribing witnesses.

HEINRICH SEOK.

\Vitnesses:

PAUL DRUCKM'ULLER, IIERNANDO DE SoTo.

